Troubleshooting
Problem
Backups of passive databases in a Database Availability Group fail with message FMX5073E or ACN5073E. None of the components entered are in a state to be backed up, even though the Exchange Database is online.
Cause
There was a Windows registry entry that stopped the Microsoft Exchange Replica Writer from loading as noted in the following Microsoft article:
http://technet.microsoft.com/en-us/library/dd876851.aspx
Diagnosing The Problem
Run the command:
vssadmin list writers
In the case where the registry is updated to disable the Microsoft Exchange Replication Writer, you will only see the one Microsoft Exchange Writer in the listing. For a correctly functioning system, the vssadmin list writers output should show both the Exchange VSS writers in a stable state.
For example:
Writer name: 'Microsoft Exchange Replica Writer'
Writer Id: {76fe1ac4-15f7-4bcd-987e-8e1acb462fb7}
Writer Instance Id: {5377b9fa-3ff1-424f-8f08-0ad5c1de68fa}
State: [1] Stable
Last error: No error
Writer name: 'Microsoft Exchange Writer'
Writer Id: {76fe1ac4-15f7-4bcd-987e-8e1acb462fb7}
Writer Instance Id: {6a58e0f8-3bde-44eb-9462-cdd4b7811ad3}
State: [1] Stable
Last error: No error
Resolving The Problem
The FlashCopy Manager and Data Protrection for Microsoft Exchange Server VSS backup uses the "Microsoft Exchange Replica Writer" when backing up the passive database. If the Microsoft Exchange Replica Writer is not loaded, this will cause the backup of the passive databases to fail with the FMX5073E or ACN5073E error since the appropriate VSS writer is not found.
If the "Microsoft Exchange Replica Writer" is not listed from "vssadmin list writers", open the Windows registry and look for the following key:
HKEY_LOCAL_MACHINE\Software\Microsoft\ExchangeServer\v14\Replay\Parameters\EnableVSSWriter
REG_DWORD 0x0
A value of 0 (Ox0) will disable the VSS writer and it will not be loaded. Change the value to 1.
Also, if the EnableVSSWriter DWORD entry is removed from the registry, this will allow the default value of 1 to be used.
Restart the Exchange Replication Service after making this change to registry.
Then run the vssadmin command to list writers and ensure the VSS Replica Writer is running.
WARNING: Editing the registry can cause serious, system-wide problems that may require you to reinstall Windows to correct them. It is suggested that you contact Microsoft support for any registry problems.
Product Synonym
TSM DP
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Document Information
Modified date:
17 June 2018
UID
swg21632907